i965: Enable ARB_texture_view on Gen7

V4: Don't enable this for Gen8 yet -- that still needs wired up.

Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Acked-by: Eric Anholt <eric@anholt.net>

src/mesa/drivers/dri/i965/intel_extensions.c

@@ -303,6 +303,10 @@ intelInitExtensions(struct gl_context *ctx)
          ctx->Extensions.ARB_compute_shader = true;
    }
 
+   if (brw->gen == 7) {
+      ctx->Extensions.ARB_texture_view = true;
+   }
+
    if (brw->gen >= 8) {
       ctx->Extensions.ARB_stencil_texturing = true;
    }